/*
 *
 *
 *
 */
package com.hd.hdxgddcommon.utils;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Component;
import org.springframework.util.Assert;

/**
 * Utils - Spring
 */
@Component("springUtils")
@Lazy(false)
public final class SpringUtils implements ApplicationContextAware, DisposableBean {

    /**
     * applicationContext
     */
    private static ApplicationContext applicationContext;

    /**
     * 不可实例化
     */
    private SpringUtils() {
    }

    public void setApplicationContext(ApplicationContext applicationContext) {
        SpringUtils.applicationContext = applicationContext;
    }

    public void destroy() throws Exception {
        applicationContext = null;
    }

    /**
     * 获取applicationContext
     *
     * @return applicationContext
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /**
     * 获取实例
     *
     * @param name Bean名称
     * @return 实例
     */
    public static Object getBean(String name) {
        Assert.hasText(name, "name不能为空");
        return applicationContext.getBean(name);
    }

    /**
     * 获取实例
     *
     * @param name Bean名称
     * @param type Bean类型
     * @return 实例
     */
    public static <T> T getBean(String name, Class<T> type) {
        Assert.hasText(name, "name不能为空");
        Assert.notNull(type, "type不能为空");
        return applicationContext.getBean(name, type);
    }

    @SuppressWarnings("unchecked")
    public static <T> T getBean(Class clazz) throws BeansException {
        return (T) applicationContext.getBean(clazz);
    }

//    /**
//     * 获取国际化消息
//     *
//     * @param code 代码
//     * @param args 参数
//     * @return 国际化消息
//     */
//    public static String getMessage(String code, Object... args) {
//        LocaleResolver localeResolver = getBean("localeResolver", LocaleResolver.class);
//        Locale locale = localeResolver.resolveLocale(null);
//        return applicationContext.getMessage(code, args, locale);
//    }

}